International stock funds worth a look for 401(k)

J. Michael Martin interviewed for the AP and CNBC. We're reminded daily that we live in a global economy. Yet as investors we often limit our thinking to the United States.  Anyone wanting a well-rounded portfolio must consider international mutual funds as a diversification tool. The movement of international stock markets isn't closely correlated to what's happening on Wall Street. So investors can lessen the possible impact of a slump in the U.S. by investing abroad.